<?php
namespace helper\wordAnalysis;

/**
 * 中文分词提取关键字
 */
class Analysis
{
    /**
     * Notes:关键字提取
     * @auther: xxf
     * Date: 2019/8/19
     * Time: 11:09
     * @param string $content
     * @param int $num 获取数量
     * @return string
     */
    public static function getKeywords($content = "", $num = 3)
    {
        if (empty ($content)) return '';
        PhpAnalysis::$loadInit = false;
        $pa = new PhpAnalysis ('utf-8', 'utf-8', false);
        $pa->LoadDict();
        $pa->SetSource($content);
        $pa->StartAnalysis(true);
        $tags = $pa->GetFinallyKeywords($num); // 获取文章中的n个关键字
        return $tags;//返回关键字
    }

}